How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Tags

NGSS.HS-PS1-1

Which of the following is NOT formed by a covalent bond?

• K₂S
• H₂O
• I₂
• CO₂

Covalent bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Is hydrogen considered a metal or a non-metal?

• A metal
• Nonmetal
• Metalloid

Atoms are most stable when their outer shell is complete.

• true
• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why do elements bond?

• To be friends
• To create a new element
• To become stable

Tags

NGSS.HS-PS1-1

How is covalent bonding represented?

• by writing its valence electrons

• by writing its Lewis structure

• by writing its number of bonds

• by writing its number of protons

What molecule could this be? 

• BF₃
• CH₄
• H₂O
• CO₂

Tags

NGSS.HS-PS1-3

What molecule could this be? 

• H₂O
• CCl₄
• PCl₅
• NaCl

Tags

NGSS.HS-PS1-3

Phosphorous trichloride

• PCl₃
  
• P₃Cl
• P₃Cl₃
• PCL